Bench-dog



(ModeL) W. H. STANNARD.

BENCH DOG.

No. 282,792. Patented Aug. 7, 1888.

WITNESSES: I 9L INVENTOR:

% z/ I V BY ATTORNEYS.

i N. PETERS. Fham-Mhognphen Washingmn. c. c.

NITED STATES ArnNr OFFICE.

\VILLIAM H. STANNARD, OF LYIWIE, CONNECTICUT.

BENCH-DOG.

SPECIFICATION forming part of Letters Patent No. 282,792, dated August'7, 188?. Application filed April18,1883. (Model) is to provide dogsbetter calculated for substantial practical use and greater durability,

and at the same time being simpler to make than any now in use, ashereinafter described.

Reference is to be had to the accompanying 1 dawings, forming a part ofthis specification,

in which similar letters of reference indicate corresponding parts inall the figures.

Figure 1 is a perspective view of my improved bench-dog. and Fig. 3 is asectional elevation taken on the line as w of Fig. 2.

Like other bench-dogs, my improved dog consists, essentially, of ahook-head, a, formed on the top of a shank, b, that is fitted in aver- 25 tical socket, e, that has a top flange, f, the shank of the hook beingprovided with means for setting it higher or lower in the socket, andthe socket being adapted to be set in the top of the bench, with its topflush with the top of the bench. For making a very substantial andreliable bench-dog for practical use, and at the same timecontriving tomake it in the simplest and cheapest manner, and with the least amountof fitting, I propose to make the socket and top flange in two separatecast ings, g and h, each having a groove or channel for its part of thesocket e, and also having part of the top flange, f, thesaid parts 9 andh being joined together along the middle of the socket, as indicated bythe dotted line, 2', Fig. 3, and the solid lines j, Fig. 1,'and fastenedby riveting the flanges L together, each part being provided with saidflanges for the purpose. The part h is cast with an opening,

I, through the side, forming the bottom of the groove or channel for thesocket; also with strengthening ribs or flanges m each side of theopening to compensate for the lack of metal at the opening, and alsowith the earsn below the opening, in which I pivot a lever- Fig. 2 isaside elevation,

pawl, o, at 19, that is employed to hold the hook-head up by notches qin the shank, into which the pawl projects through the said opening- Z.This lever-pawl has an arm, 8, eXtending back of the pivot 19,horizontally or thereabout, through which the stem tof a push-bit, I u,extends for disconnecting the pawl from the shank of the hook whenrequired by pressing down on the push-bit, which extends up through thetop flange, f, to be pressed by the finger. A collar, w, on said stemrests on the top of arm 8 for applying the pressure to it, and anothercollar, :0, below, prevents the stem from being detached. Another arm, 3extending downward from arm 8 of the lever-pawl parallel to the sockete, and having a prong, a, serves, together with another prong, a, caston the socket, to connect the. spiral spring I), by which the lever-pawl0 is held in thenotches q of the shank of the hookhead. The shank of thehook-head and its socket are made square, to afford broad andsubstantial bearing-surfaces that will not turn or shift out of place incasethe thrusts of the. tool on the work happen to be oblique to thehook, and thepawl and spring are located in front of the hook, and thespring is required to be sufficientlystrong to bear the hook-shank I)back against its bearing, so as to prevent any chattering under thethrusts of the tool. It is to be noted that both of these parts of thesocket and top flange can be molded as plain patterns, so as to dispensewith cores, which is one of the objects in making them in separateparts. Another object is the greater facility of smoothing and truingthe socketspace, which the separate parts afford in case any lumps,bulges, or other imperfections of the casting have to be removed, whichis frequently the case; and another and more imporant advantage of theseparate construction is that the liability of imperfect castings, dueto lack of care in setting the core for coring out the socket in onepiece, is wholly avoided. It will be seen that theonly fitting requiredin the construction of this improved benchdog consists of boring therivet and screw -holes and the hole in arm 8 for the stem of thepush-bit, fitting in the rivets, and providing fastened together,substantially as described.

The shank Z) of the hookhead may have all its sides notched, so that thehook-head may be shifted around in case it breaks on one or more sides.This hook-head and its shank are to be cast also, the notches for thepawl being formed in the casting.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a bench-dog, the socket and top flangeconstructed in two parts, each having a groove forming part of thesocket, and both parts being provided with flanges by which they are 2.In a bench-dog, the combination of the lever-pawl, having a horizontalarm from which depends a vertical arm, witha socket between ears, onwhich the pawl is pivoted,

the notched hook shank, the spring acting upon the pawl, and thepush-bit connected to the horizontal arm of the pawl, and arranged to beoperated by the finger, substantially as and for the purpose set forth.

3. In a' bench-dog, the combination, with WILLIAM HENRY STANNARD.

Witnesses:

H. A. CHAMPION, DANIEL CHADWICK.

